136 [Avuausr, 
face black, tibie and tarsi very obscurely rufo-piceous. Abdominal plates shorter 
than the first segment of the abdomen. 
S. (Diomus) myrmidon Muls. 954, : seems to be allied to this species, 
but the yellow feet, testaceous apex of the elytra, Date shorter abdominal plates, 
at once distinguish it. 
3. S.guttulatus, rotundatus, convexus, niger nitidus, vc tHI ne: pubes- 
cens, elytris gutta parva utrinque ad medium, alterisque duabus pone medium 
rufis. Long. :08. 
Two specimens, San. Francisco, California. Slightly oval rounded, and °con- 
vex, black, finely punctulate, tolerably densely pubescent. Thorax "somewhat 
narrowed in front, very slightly rounded on the sides, not margined at the base, 
which is scarcely sinuate. Elytra more distinctly punctured than the thorax, 
marked with a small round red spot at the middle about the internal third of the 
breadth, and two others placed transversely about two sevenths from the apex, 
of which the exterior is the larger and slightly oblique. . Under surface entirely 
black. Abdominal plates a little shorter than the first joint of the abdomen. 
4. §.flavifrons,-rotundatus, convexus, niger, punctatus, breviter pubes- 
cens, elytris macula utrinque pone medium, ore tibiis tarsisque flavis. Long. +08. 
Melsheimer, Pr. Acad. Nat. Sc. 3, 181. 
New York and Pennsylvania, rare. Rounded, convex, black shining, distinctly 
punctured, covered with fine gray hair; mouth and its organs yellow. Thorax 
narrowed in front, scarcely rounded on the sides, finely margined at the base, 
which is truncate in front of the scutellum, and obliquely sinuous each side. 
Elytra with a large round yellow spot at the posterior third, and equidistant from 
the side and suture. Body beneath entirely black, tibiw and tarsi yellow. Ab- 
dominal plates shorter than the first segment; their posterior margin is parallel 
with the margin of the segment, and reaches the side as in the preceding 
species. 
5. S. bioculatus, rotundato-ovalis convexus, niger punctatus, cinereo- 
pubescens, elytrorum gutta pone medium, tibiis tarsisque flavis. Long. :07. 
Muls. 960. 
Georgia, rare. This species exactly resembles the last, but it issmaller and 
more oval, the elytra being a little narrowed behind, and not so regularly rounded 
on the sides, as in S. flavifrons. ‘The punctures of the elytra are somewhat 
larger. In one specimen the head is testaceous, in the other it is black, but both 
are females. 
A.—b. 
6. S.terminatus, subrotundatus, convexus, niger nitidus, punctatus, sub- 
tiliter pubescens, capite, thoracis abdominisque lateribus pedibusque testaceis, 
elytris apice late flavis. Long. :075. 
Say, Bost. Journ. Nat. Hist. 1, 203: Muls. 952. 
Pennsylvania, Georgia. Rounded, slightly, oval, convex, black and shining, 
covered with very fine gray hair. Head testaceous; thorax finely and closely 
punctured, narrowed in front, but litte rounded on the sides, base rounded, finely 
margined, scarcely at all sinuous, sides narrowly margined with testaceous. 
Elytra more coarsely punctured, apex with a large yellow spot occupying about 
one-fifth of the length, and having its anterior boundary slightly convex. Beneath 
black, abdomen testaceous, black at base ; ; feet yellowish; the abdominal plates 
extend to the posterior margin of the segment. 
Varies with the sides of the thorax widely testaceous, and the apex narrowly 
margined with the same color. | 
Allied to this species is Soxanthaspis Mauls. 952, from Florida, which is 
afterwards (p. 1101) comsidered as a variety of S. ochroderuss its yellow 
thorax will at once distinguish it. 
7. S.femoralis, subrotundatus, convexus, niger nitidus, punctatus subtiliter 
pubescens, capite thoracis lateribus, elytrorum apice lata testaceis, tibiis tarsis- 
que piceis. Long. -075. 
One specimen, New York. Very similar to the last. The thorax isa little 
